condition mean min max 0 h after light 0.7700335 0.769347 0.77072 4 h after light 1.826895 1.56782 2.08597 8 h after light 2.207555 1.37051 3.0446 4 h after dark 2.27164 2.07789 2.46539 8 h after dark 1.899865 1.33717 2.46256 12 h after dark 0.37788099999999997 0.192078 0.563684